Thanks for the info guys. We ended up putting in around 4 1/2 quarts, which brought the dipstick up to the full line. I thought that was a little too much, but I doubt an extra half quart will do any harm. The car was parked on a very slight incline, so I think that is why it was reading a little low. Btw, he showed up with Exxon Superflo oil and a Fram filter. The oil was about 99 cents which was the cheapest they had lol. He's kind of cheap like that, oh well it's his car not mine.